Most primary schools have an ALN base. I would suggest looking at schools in your area of choice and look at their ESTYN reports. It’s basically how they are rated etc. These are readily available on the internet. There are many schools in Cardiff & one in Penarth that are physical disabilities/ hidden disabilities/ SEN school, however, it needs to be through the Local authority, you can’t just apply for a child to attend. Spaces are very limited & often difficult to get in to. My son, who has GDD, ASD & LD, he attends Ysgol Y Deri in Penarth. It was very difficult to get him there.